Welt-sewing machine.



A. EPPLER WELT SEWING MACHINE.

APPLICATION FILED DEC. 20, 1913.

1 A m m z 4 I 7 fl w w w h t w W F A w a a a m Z 771* Vflwi/ RS no" FNO'ID-LIYHO- wAsmlvumN. u. c.

UNITED STATES PATENT OFFICE.

ANDREW EPPLER, .OF LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

V I WELT-SEWING MACHINE.

Specification of Letters latent.

Patented July 4:, 1916.

Application filed December 20, 1913. Serial No.807,856.

and useful Improvements in Welt-Sewing I do hereby declare the fol- Machines; and

full, clear, and exact descriplowing to be a tion of the invention, such as will enable ing devices of others skilled in the art to which it appertains to make and use the same.

The invention relates towelt sewing machines such as are used for sewing the inseams of welted shoes. In machines of this type the welt is usually led to the welt, guidthe machine from a reel or from a coil of weltingplaced onthe floor near the base of the machine. In either case the welt is drawn from the supply of welting by the forward feed of the shoe, thus putting more or less strain upon the shoe feeding devices. The pull on the welt, due to the resistance of the welt supply to the drawing forward of the welt also interferes in some instances with the proper attachment of the welt to the shoe, especially in sewing about the toe. I i

It is the object of the present invention to provide means for avoiding the objectionable strain or pull on the welt, and to this end the invention contemplates the provision in a welt sewing machine of means for slackening the welt between the welt guide and welt supply, so that the welt will offer comparatively little resistance to the forward movement during the feed of the shoe. Any suitable means may be employed for this purpose which will operate during the sewing to provide comparatively slack welt between the welt supply and the sewing point during the feed of the shoe. It is preferred, however, to employ for this purpose apull-olf which is operated during the sewing to intermittently pull off and slacken the welt.

The invention will be readily understood from an inspection of the accompanying drawings and the following detailed description of the mechanism illustrated therein.

In the vation showing a welt sewing machine embodying the invention in its preferred form; Fig. 2 is a detailed elevation showing the welt pull-off; and Fig. 3 is a vertical secment of the drawings, Figure 1 is a front eletional view through the axis of the welt guiding roll shown in Fig. 2.

In the drawings the invention is shown as embodied in a welt sewing machine having the construction and mode of operation of the machine shown and described in Patent No. 1,07 6,878, dated October 28, 1918. This machine is provided with the usual stitch forming and shoe feeding devices including the looper 2, thread finger r, awlr6, and channel guide 8, the awl and channel guide being mounted on a horizontal reciprocating feed slide 10. The machine is also provided with a'welt guide 12 and with a guide roll it over which the welt leads from the welt guide to the supply of welting, which may be wound around a reel, or be in the form of a loose coil near the base of the machine.

In accordance with the present invention the machine is also provided with means which operate during the sewing to provide comparatively slack'welt between the welt supply and the welt guide. In the-"construction shown this means comprises a welt pull-01f in the form of a roll 16 projecting laterally from a rock arm 18 and arranged to engage the welt between the guide roll 14 and a guide plate 20 whichis arranged below the pull-off roll, and is provided with a hole through which the welt passes. The rock arm 18 is formed on the end of a sleeve 22 which is mounted to turn about the rock shaft 2 f on which the guide roll 14 is mounted. The arm 18 is conveniently operated to intermittently pull upon and slacken the welt during the sewing through a link 26 which connects the arm with the feed slide operating lever 28.

During the forward or shoe feeding movefeed slide the pull-off 16 moves toward the left in Fig. 2, thus giving up or slackening the welt between the welt supply and the welt guide 12, so that the welt lead ing from the welt supply ofl'ers comparatively little resistance to forward movement. During the return movement of the feed slide the pull-oif'moves toward the right, drawing on the welt and pulling it forward from the welt supply. During'the sewing,

, therefore, the pull-Oif is operated during scribed, the vertical length of welt leading from the welt supply to the roll 14 is raised and lowered rapidly during the sewing, andin case the welt is drawn from a loose coil, this intermittent raising and lowering of the welt tends to free the welting from the coil and maintain it in proper condition during the sewing.

While it is preferred to employ cific construction and arrangement shown and described, it will be understood that this construction is not essential to the broader features of the invention, and may be varied and modified without departing therefrom.

Having explained the nature and object of the invention, and specifically described one form of mechanism in which it may be embodied, what is claimed is l. A welt sewing machine, having, in combination, stitch forming and shoe feeding mechanism, a welt guide, and means for automatically slackening the welt between the welt guide and welt supply during the sewing.

2. A welt sewing machine, having, in combination, stitch forming and shoe feeding mechanism, a welt guide, and an intermittently acting welt pull-ofl for supplying comparatively slack welt between the welt supply and sewing point during the feed of the shoe.

3. A welt sewing machine, having, in

the specopiel of this patent may be obtained for five cents each, by addressing the combination, stitch forming mechanism, a welt guide, a welt pull-off, and means for actuating the pull-off to intermittently pull on and slacken the welt during the sewing.

4:. A welt sewing machine, having, in combination, stitch forming and shoe feeding mechanism including a feed slide lever, a welt guide, and a welt pull-ofi between the welt guide and welt supply and connected with the feed slide lever.

5. A welt sewing machine, having, in combination, stitch forming mechanism, a welt guide, welt guiding devices between the welt guide and welt supply, and a welt pulloii' engaging the welt devices, and means for intermittently reciplocating the pull-0E to pull and to slacken the welt.

6. A welt sewing machine, having, in combination, stitch forming mechanism, a welt guide, a guide roll 14 over which the Welt passes, a welt guide 20 below the roll, and a reciprocating pull-off l6 engaging the welt between the roll and guide.

7 A welt sewing machine, having, in combination, stitch forming and shoe feeding mechanism, a welt guide, and intermittently acting Welt slackening means for supplying comparatively slack welt between the welt supply and sewing point during the feed of the shoe.

ANDREW EPPLER.

"Commissioner of Intent.

Washington, D. G."

between the guiding 

